Service manual technical overview 119 – Welch Allyn PROPAQ CS User Manual
Page 123
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Service Manual
Technical overview
119
CUFF
PRIMARY
TRANSDUCER
SECONDARY
TRANSDUCER
DUMP
VALVE
OPEN
SERVO
(LINEAR)
VALVE
CLOSED*
BLEED
VALVE
OPEN
PUMP
OFF
ATMOSPHERIC PRESSURE
INCREASING PRESSURE (INFLATION)
DECREASING PRESSURE (DEFLATION)
PRESSURIZED (TARGET REACHED)
* VALVE IS INITIALLY CLOSED,
BUT OPENS AFTER INITIAL DUMPING
BEGINS BY DUMP VALVE. THIS CHECKS
INTEGRITY OF DUMP VALVE'S ABILITY TO
OPEN.
NIBP PNEUMATICS AFTER MEASUREMENT COMPLETE
0696-66
TO DAP A-D
CONVERTER
TO DCP A-D
CONVERTER
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